CN110392435A - A data transmission method and system - Google Patents

Abstract

This application discloses a kind of data transmission method and systems, and wherein method includes: to notify UE described in base station to support smart control business when supporting the user equipment (UE) completion RRC connection of smart control business to establish；The base station configures multi-subband relevant configuration information for the UE and is sent to the UE according to the notice；The UE executes relevant configuration and operates and be switched to multi-subband operating mode, carry out data transmission under multi-subband operating mode according to the multi-subband relevant configuration information.Using the present invention, it can be ensured that the timeliness of essence control business information interaction.

Description

A data transmission method and system

technical field

The present invention relates to mobile communication technology, in particular to a data transmission method and system for precise control service users in an orthogonal frequency division multiplexing system.

Background technique

In a broadband access system, the available bandwidth of the system is divided into multiple continuous or non-continuous sub-bands, and orthogonal frequency division multiplexing (OFDM) technology is used for transmission on each sub-band. The power load monitoring communication network is a typical application scenario, and its spectrum is discretely distributed in the 230M frequency band. Figure 1 shows a schematic diagram of the distribution of frequency resources in the 230MHz frequency band of the network. It can be seen from Figure 1 that its spectrum is comb-shaped, and the frequency resources of this frequency band can be divided into several subbands, the subband of the lowest frequency point is 223.525MHz, and the subband of the highest frequency point is 231.65MHz.

Orthogonal frequency division multiplexing system can have broadband transmission capability to meet the new demands put forward by the in-depth development of power industry informatization. The system can not only support the electricity consumption information collection business of collecting and analyzing electricity consumption information of residential users, industrial and commercial users and special transformer users (such as large factories), etc., but also provide support for the production of distribution scheduling and distribution network. Commanded distribution automation and load management, emergency repair, maintenance, and visual management of mobile assets. Among these services, the power system has very high requirements on the transmission delay of distribution automation services, especially the timeliness of information exchange of millisecond-level precise load control services (referred to as: precise control services) has stricter requirements. In order to achieve the purpose of low transmission delay and fast response of precision control services, a series of measures need to be taken for the orthogonal frequency division multiplexing system to ensure the normal operation of the distribution network.

In the prior art, the orthogonal frequency division multiplexing system divides subbands into synchronization subbands and normal subbands according to functions. The main functions of the synchronization subband are uplink and downlink synchronization and broadcast channels, and the common subband is used for normal service transmission. Considering the cost reduction and implementation complexity, user equipment (UE, UserEquipment) supports multi-subband and single-subband working modes, that is, the UE receiver bandwidth does not have to be the entire system bandwidth, and can support receiving multiple or single subbands. All subbands must be received. Depending on the hardware capabilities, the UE supports working on all or part of the subbands, with the simplest (ie low cost) UE supporting working on a single subband. In addition, considering the requirement of coverage enhancement, the orthogonal frequency division multiplexing system introduces the mechanism of repeated transmission. For the system design of this mechanism, the PCFICH channel is cancelled, the PDCCH search space is configured to the UE through a signaling message, and the DCI carried on the PDCCH channel supports repeated transmission.

When the UE to which the precise control service belongs has the service data to be transmitted, it first converts the UE to the DRX active state through the paging or SR process; Configure multi-subband resources; after the UE switches to the multi-subband working mode, the base station schedules the UE to perform fine-control service transmission on multiple subbands. There is a certain processing delay in this processing process. If the repeated transmission introduced by the requirement of coverage enhancement is considered, the delay of the above process may be longer. The design of this process cannot meet the power system's requirements for low transmission delay and fast response of precision control services. Therefore, it is necessary to consider and solve the problem of how to ensure the timeliness of information exchange of precision control services.

SUMMARY OF THE INVENTION

In view of this, the main purpose of the present invention is to provide a method and system for sending a channel sounding reference signal, which can ensure the timeliness of precise control service information exchange.

In order to achieve the above object, the technical scheme proposed by the present invention is:

A method of data transmission, comprising:

When the user equipment UE supporting the fine control service completes the RRC connection establishment, notifying the base station that the UE supports the fine control service;

The base station configures, according to the notification, multi-subband related configuration information for the UE and sends it to the UE;

The UE performs a related configuration operation according to the multi-subband related configuration information, switches to a multi-subband working mode, and performs data transmission in the multi-subband working mode.

Preferably, the notifying the base station that the UE supports the fine-control service includes:

The UE uses the radio resource control connection establishment to complete the RRC Connection Setup Complete message, and sends the service type information of the precise control service to the base station;

The base station learns, according to the service type information, that the UE supports the fine-control service.

Preferably, the notifying the base station that the UE supports the fine-control service includes:

The UE uses the newly added selectedPLMN-Identity information element in the RRC Connection Setup Complete message to carry the network identifier corresponding to the service type information of the fine-control service;

The base station learns that the UE supports the fine-control service according to the network identifier and the preset correspondence between the network identifier and the service type.

Preferably, the base station sends the multi-subband related configuration information to the UE by using a radio resource control connection reconfiguration RRC ConnectionReconfiguration message.

Preferably, the multi-subband related configuration information includes: multi-subband physical downlink control channel PDCCH configuration information and/or multi-subband scheduling request SR index configuration;

The multi-subband PDCCH configuration information is used to indicate the PDCCH channel configuration of the UE in the multi-subband working area, and the multi-subband PDCCH configuration information includes the starting subband number subbandStart of the multi-subband, the subband of the multi-subband length subbandLength, multi-subband PDCCH period factor pdcchStartF, multi-subband PDCCH repetition times pdcchNumRepetitions and multi-subband PDCCH offset pdcchOffset;

The starting subband number of the multiple subbands is used to indicate the starting position of the PDCCH in the multi-subband working mode of the UE; the subband length of the multiple subbands is used to indicate that the PDCCH occupies the subbands in the multiple subband working mode. Number; the cycle factor of the multi-subband PDCCH is used to indicate the cycle factor of the PDCCH cycle of the UE in the multi-subband working mode; the number of repetitions of the multi-subband PDCCH is used to indicate the number of times the UE repeats the PDCCH radio frame in the multi-subband working mode; The subband PDCCH offset is used to instruct the UE to calculate the offset of the start of the PDCCH cycle in the multi-subband working mode; the subband length of the multi-subband is less than or equal to the maximum number of downlink receiving subbands supported by the UE;

The multi-subband SR index configuration is used to configure SR resources for the UE in the multi-subband working mode.

Preferably, the method further comprises:

After performing the related configuration operation, the UE confirms to the base station that the multi-subband related configuration is completed by using an RRC Connection ReconfigurationComplete message.

Preferably, the method further comprises:

When configuring the multi-subband related configuration information for the UE, the base station sets the corresponding multi-subband resource usage rights to shared resources, and the user of the fine-control service has the priority to use the shared resources.

Preferably, the method further comprises:

When the base station needs to modify the multi-subband related configuration for the UE, it sends the modified multi-subband related configuration information to the UE through the RRC ConnectionReconfiguration Complete message, so as to trigger the UE according to the modified multi-subband related configuration information. With relevant configuration information, perform the corresponding multi-subband configuration operation.

A data transmission system comprising:

The user equipment UE supports the fine-control service, and is used to notify the base station that the UE supports the fine-control service when the RRC connection is established; according to the multi-subband related configuration information sent by the base station, perform related configuration operations and switch to the multi-subband working mode , data transmission in multi-subband working mode

The base station is configured to configure multi-subband related configuration information for the UE according to the notification and send it to the UE.

Preferably, the UE is used to send the service type information of the precise control service to the base station by using the RRC Connection Setup Complete message;

The base station is configured to know that the UE supports the fine control service according to the service type information.

Preferably, the UE is used for using the newly added selectedPLMN-Identity information element in the RRC Connection Setup Complete message to carry the network identifier corresponding to the service type of the fine-control service;

The base station learns that the UE supports the fine-control service according to the network identifier and the preset correspondence between the network identifier and the service type.

Preferably, the base station is configured to send the multi-subband related configuration information to the UE by using an RRC Connection Reconfiguration message.

Preferably, the multi-subband related configuration information includes: multi-subband PDCCH configuration information and/or multi-subband SR index configuration;

The multi-subband PDCCH configuration information is used to indicate the PDCCH channel configuration of the UE in the multi-subband working area, and the multi-subband PDCCH configuration information includes the starting subband number subbandStart of the multi-subband, the subband of the multi-subband length subbandLength, multi-subband PDCCH period factor pdcchStartF, multi-subband PDCCH repetition times pdcchNumRepetitions and multi-subband PDCCH offset pdcchOffset;

Wherein, the starting subband number of the multiple subbands is used to indicate the starting position of the PDCCH of the UE in the multi-subband working mode; the subband length of the multiple subbands is used to indicate that the UE occupies the PDCCH in the multiple subband working mode. The number of subbands; the cycle factor of the multi-subband PDCCH is used to indicate the cycle factor of the PDCCH cycle of the UE in the multi-subband operation mode; the number of repetitions of the multi-subband PDCCH is used to indicate the number of times the UE repeats the radio frame in the multi-subband operation mode ; The multi-subband PDCCH offset is used to instruct the UE to calculate the offset of the beginning of the PDCCH cycle in the multi-subband working mode; the subband length of the multi-subband is less than or equal to the maximum number of downlink receiving subbands supported by the UE;

The multi-subband SR index configuration is used to configure SR resources for the UE in the multi-subband working mode.

Preferably, the UE is further configured to confirm to the base station that the multi-subband related configuration is completed by using an RRC ConnectionReconfiguration Complete message after performing the related configuration operation.

Preferably, the base station is further configured to set the usage authority of the corresponding multi-subband resource as a shared resource when configuring the multi-subband related configuration information for the UE, and the user of the fine-control service has the shared resource. priority of use.

Preferably, the base station is further configured to send the modified multi-subband related configuration information to the UE through the RRCConnection Reconfiguration Complete message when the multi-subband related configuration needs to be modified for the UE, so as to trigger the The UE performs a corresponding multi-subband configuration operation according to the modified multi-subband related configuration information.

To sum up, in the above data transmission scheme proposed by the present invention, the UE supporting the fine-control service will notify the base station that it supports the fine-control service when the RRC connection is established, and the base station configures multiple subbands for the UE according to the notification. related configuration. The UE performs relevant configuration according to the received configuration information and switches to the multi-subband working mode. After that, the UE has been performing data transmission in a multi-subband working mode. In this way, every time the UE transmits fine-control services, it does not need to switch from the single subband working mode to the multi-subband working mode first, as other types of UEs do, and can directly perform data transmission in the multi-subband working mode. , which reduces the time delay of the working mode switching process, thereby speeding up the establishment and transmission of the fine-control service, so it can effectively ensure the timeliness of the fine-control service information exchange.

Description of drawings

Figure 1 is a schematic diagram of the distribution of frequency resources in the 230MHz frequency band of the existing power load monitoring communication network;

2 is a schematic flowchart of a method according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a system structure according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

The core idea of the present invention is: when the user equipment UE supporting the fine-control service completes the RRC connection establishment, it notifies the base station that it supports the fine-control service, so as to trigger the base station to configure the multi-subband related configuration information for it, and the UE receives the multi-subband related configuration information. After the relevant configuration information is obtained, it will switch to the multi-subband working mode accordingly, and perform data transmission in the multi-subband working mode. In this way, every time the UE transmits fine-control services, it does not need to switch the single-subband working mode to the multi-subband working mode first, and can directly perform data transmission in the multi-subband working mode, reducing the working mode switching. The delay of the process, thereby speeding up the establishment and transmission of fine-control services.

FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 2 , the data transmission method mainly includes:

Step 201: When the user equipment UE supporting the fine control service completes the establishment of the RRC connection, notify the base station that the UE supports the fine control service.

In this step, the UE that supports the fine-control service needs to notify the base station that it supports the fine-control service when the RRC connection is established, so as to trigger the base station to configure the multi-subband related configuration information for it in advance, so that the UE can enter the multi-subband in advance. Sub-band working mode, so that when there is a fine-control service transmission, data transmission can be performed directly in the multi-sub-band working mode, which reduces the time delay of the working mode switching process, thereby accelerating the establishment and transmission of fine-control services. .

Preferably, a radio resource control connection setup complete (RRC Connection SetupComplete) message can be used to notify the base station that the UE supports the fine control service, that is:

The UE sends the service type information of the fine control service to the base station by using the RRC Connection Setup Complete message; the base station learns that the UE supports the fine control service according to the service type information.

Here, when the base station detects that the RRC Connection Setup Complete message carries the service type information of the fine-control service, it will know that the UE supports the fine-control service.

Further, the UE can use the newly added information element in the RRC Connection Setup Complete message to notify the base station that the UE supports the fine control service, as follows:

The UE uses the newly added selected PLMN-Identity information element in the RRC Connection Setup Complete message to carry the network identity corresponding to the service type information of the precise control service; The corresponding relationship between the set network identifier and the service type is obtained, and it is known that the UE supports the fine-control service.

Here, the UE sets the value of the selected PLMN-Identity cell in the RRC Connection Setup Complete message according to the service type in the configuration file. For example, 1 is the fine-control service, 2 is the power distribution service, and 3 is other services. The parameter informs the base station whether the UE supports the fine control service. The base station selects different transmission channels and core networks according to the selected PLMN-Identity. When the selected PLMN-Identity is a fine-control service, the base station will configure multi-subband related configuration information for the UE.

Step 202: The base station configures the UE with multi-subband related configuration information according to the notification, and sends the configuration information to the UE.

In this step, after learning that the UE supports the fine-control service according to the notification, the base station will configure the multi-subband related configuration information for the UE.

Preferably, the base station may send the multi-subband related configuration information configured for the UE to the UE by using a radio resource control connection reconfiguration (RRC ConnectionReconfiguration) message.

Preferably, in order to ensure that the UE accurately knows the multi-subband resources configured for it, the multi-subband related configuration information includes at least the following information: multi-subband physical downlink control channel PDCCH configuration information and/or multi-subband scheduling Request SR index configuration.

The multi-subband PDCCH configuration information is used to indicate the PDCCH channel configuration of the UE in the multi-subband working area, and the multi-subband PDCCH configuration information includes the starting subband number subbandStart of the multi-subband, the subband of the multi-subband Band length subbandLength, multi-subband PDCCH period factor pdcchStartF, multi-subband PDCCH repetition times pdcchNumRepetitions and multi-subband PDCCH offset pdcchOffset.

The starting subband number of the multiple subbands is used to indicate the starting position of the PDCCH in the multiple subband working mode of the UE;

The subband length of the multi-subband is used to indicate the number of subbands occupied by the PDCCH in the multi-subband working mode of the UE;

The cycle factor of the multi-subband PDCCH is used to indicate the cycle factor of the PDCCH cycle of the UE in the multi-subband working mode;

The number of repetitions of the multi-subband PDCCH is used to indicate the number of times that the UE repeats the radio frame of the PDCCH in the multi-subband working mode;

The multi-subband PDCCH offset is used to instruct the UE to calculate the offset of the start of the PDCCH cycle in the multi-subband working mode;

The subband lengths of the multiple subbands are less than or equal to the maximum number of downlink receiving subbands supported by the UE.

In this way, the frequency domain position of the PDCCH of the UE in the multi-subband working mode can be determined through the starting subband number subbandStart of the multi-subband and the subbandLength subbandLength of the multi-subband.

In the time domain, the period of the multi-subband PDCCH can be calculated by the period factor of the multi-subband PDCCH and the number of repetitions of the multi-subband PDCCH. The multi-subband PDCCH period is T _PDCCH =pdcchStartF*pdcchNumRepetitions. The starting position of the multi-subband PDCCH cycle is SFN mod T _PDCCH =pdcchOffset.

It should be noted that when the base station configures the subband length of multiple subbands for the UE, the subband length value should be less than or equal to the downlink subband capability of the UE, that is, it cannot exceed the maximum number of downlink receiving subbands supported by the UE.

The multi-subband SR index configuration is used to configure SR resources for the UE in the multi-subband working mode.

Step 203: The UE performs related configuration operations according to the multi-subband related configuration information, switches to the multi-subband working mode, and performs data transmission in the multi-subband working mode.

In this step, after receiving the multi-subband related configuration information, the UE will perform related configuration according to the multi-subband related configuration information and switch to the multi-subband working mode. In this way, the UE will monitor the PDCCH in the multi-subband working area in the multi-subband working mode, and obtain control information by detecting the multi-subband PDCCH search space. In other words, the UE is equivalent to staying in the multi-subband working area all the time, and performs data transmission in the configured multi-subband working area. If the UE triggers the SR process in the multi-subband working mode, the SR is sent on the SR resource configured for it according to the multi-subband SR index configuration.

Preferably, after performing the related configuration operation, the UE may use an RRC ConnectionReconfiguration Complete message to confirm to the base station that the multi-subband related configuration is completed.

It should be noted that the PUCCH resource position of the UE in the multi-subband working mode is associated with the starting position of the PDCCH frequency domain, that is, the starting subband number subbandStart of the multi-subband configured for the UE corresponds to the PUCCH frequency of the UE. Domain resource location.

In this way, the fine-control service user completes the multi-subband related configuration through the above process, switches to the multi-subband working mode, and performs data transmission in the multi-subband working mode. When the precise control service user has no data transmission, the user does not need to switch back to the single-subband working mode.

Further, in order to fully improve the utilization rate of resources, the base station, when configuring the multi-subband related configuration information for the UE, sets the corresponding multi-subband resource usage rights to shared resources, and the user of the fine-control service has The priority to use the shared resource. That is to say, the precise control service user and other users can share the multi-subband work area resource, but the precise control service user preferentially uses this resource.

Further, in order to improve the flexibility of the multi-subband configuration, when the base station needs to modify the multi-subband related configuration for the UE, it can also send the modified multi-subband related configuration information through the RRC Connection Reconfiguration Complete message. to the UE to trigger the UE to perform a corresponding multi-subband configuration operation according to the modified multi-subband related configuration information.

It can be seen from the above solution that after the fine-control service user completes the access process of a single subband, the related configuration of multiple subbands will be completed, and the multi-subband working mode will be switched to reside in the configured working area. Once there is service data transmission, precise control service users can directly transmit data in multi-subband working mode without switching from single-subband working mode to multi-subband working mode, which effectively reduces the transmission delay of service data. That is to say, when the UE has fine-control service transmission, it does not need to perform the operation of switching the single-subband working mode to the multi-subband working mode as in the existing solution, and can directly perform data transmission in the multi-subband working mode, reducing the need for It reduces the time delay of the working mode switching process, thereby speeding up the establishment and transmission of fine-control services.

FIG. 3 is a schematic structural diagram of a data transmission system corresponding to the above method. As shown in FIG. 3 , the system includes:

The user equipment UE supports the fine-control service, and is used to notify the base station that the UE supports the fine-control service when the RRC connection is established; according to the multi-subband related configuration information sent by the base station, perform related configuration operations and switch to the multi-subband working mode , data transmission in multi-subband working mode

The base station is configured to configure multi-subband related configuration information for the UE according to the notification and send it to the UE.

Preferably, the UE is used to send the service type information of the precise control service to the base station by using the RRC Connection Setup Complete message;

The base station is configured to know that the UE supports the fine control service according to the service type information.

Preferably, the UE is used for using the newly added selectedPLMN-Identity information element in the RRC Connection Setup Complete message to carry the network identifier corresponding to the service type of the fine-control service;

The base station learns that the UE supports the fine-control service according to the network identifier and the preset correspondence between the network identifier and the service type.

Preferably, the base station is configured to send the multi-subband related configuration information to the UE by using an RRC Connection Reconfiguration message.

Preferably, the multi-subband related configuration information includes: multi-subband PDCCH configuration information and/or multi-subband SR index configuration;

The multi-subband PDCCH configuration information is used to indicate the PDCCH channel configuration of the UE in the multi-subband working area, and the multi-subband PDCCH configuration information includes the starting subband number subbandStart of the multi-subband, the subband of the multi-subband length subbandLength, multi-subband PDCCH period factor pdcchStartF, multi-subband PDCCH repetition times pdcchNumRepetitions and multi-subband PDCCH offset pdcchOffset;

Wherein, the starting subband number of the multiple subbands is used to indicate the starting position of the PDCCH of the UE in the multi-subband working mode; the subband length of the multiple subbands is used to indicate that the UE occupies the PDCCH in the multiple subband working mode. The number of subbands; the cycle factor of the multi-subband PDCCH is used to indicate the cycle factor of the PDCCH cycle of the UE in the multi-subband operation mode; the number of repetitions of the multi-subband PDCCH is used to indicate the number of times the UE repeats the radio frame in the multi-subband operation mode ; The multi-subband PDCCH offset is used to instruct the UE to calculate the offset of the beginning of the PDCCH cycle in the multi-subband working mode; the subband length of the multi-subband is less than or equal to the maximum number of downlink receiving subbands supported by the UE;

The multi-subband SR index configuration is used to configure SR resources for the UE in the multi-subband working mode.

Preferably, the UE is further configured to confirm to the base station that the multi-subband related configuration is completed by using an RRC ConnectionReconfiguration Complete message after performing the related configuration operation.

Preferably, the base station is further configured to set the usage authority of the corresponding multi-subband resource as a shared resource when configuring the multi-subband related configuration information for the UE, and the user of the fine-control service has the shared resource. priority of use.

Preferably, the base station is further configured to send the modified multi-subband related configuration information to the UE through the RRCConnection Reconfiguration Complete message when the multi-subband related configuration needs to be modified for the UE, so as to trigger the The UE performs a corresponding multi-subband configuration operation according to the modified multi-subband related configuration information.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (16)

1. a data transmission method, is characterized in that, comprises: When the user equipment UE supporting the fine control service completes the RRC connection establishment, notifying the base station that the UE supports the fine control service; The base station configures, according to the notification, multi-subband related configuration information for the UE and sends it to the UE; The UE performs a related configuration operation according to the multi-subband related configuration information, switches to a multi-subband working mode, and performs data transmission in the multi-subband working mode. 2. The method according to claim 1, wherein the informing the base station that the UE supports the fine control service comprises: The UE uses the radio resource control connection establishment to complete the RRC Connection Setup Complete message, and sends the service type information of the precise control service to the base station; The base station learns, according to the service type information, that the UE supports the fine-control service. 3. The method according to claim 1, wherein the informing the base station that the UE supports the fine control service comprises: The UE uses the newly added selectedPLMN-Identity information element in the RRC Connection Setup Complete message to carry the network identity corresponding to the service type information of the fine-control service; The base station learns that the UE supports the fine-control service according to the network identifier and the preset correspondence between the network identifier and the service type. 4. The method according to claim 1, wherein the base station sends the multi-subband related configuration information to the UE by using a radio resource control connection reconfiguration RRC Connection Reconfiguration message. The method according to claim 1, wherein the multi-subband related configuration information comprises: multi-subband physical downlink control channel PDCCH configuration information and/or multi-subband scheduling request SR index configuration; The multi-subband PDCCH configuration information is used to indicate the PDCCH channel configuration of the UE in the multi-subband working area, and the multi-subband PDCCH configuration information includes the starting subband number subbandStart of the multi-subband, the subband of the multi-subband length subbandLength, multi-subband PDCCH period factor pdcchStartF, multi-subband PDCCH repetition times pdcchNumRepetitions and multi-subband PDCCH offset pdcchOffset; The starting subband number of the multiple subbands is used to indicate the starting position of the PDCCH in the multi-subband working mode of the UE; the subband length of the multiple subbands is used to indicate that the PDCCH occupies the subbands in the multiple subband working mode. Number; the cycle factor of the multi-subband PDCCH is used to indicate the cycle factor of the PDCCH cycle of the UE in the multi-subband working mode; the number of repetitions of the multi-subband PDCCH is used to indicate the number of times the UE repeats the PDCCH radio frame in the multi-subband working mode; The subband PDCCH offset is used to instruct the UE to calculate the offset of the start of the PDCCH cycle in the multi-subband working mode; the subband length of the multi-subband is less than or equal to the maximum number of downlink receiving subbands supported by the UE; The multi-subband SR index configuration is used to configure SR resources for the UE in the multi-subband working mode. 6. The method of claim 1, further comprising: After performing the related configuration operation, the UE confirms to the base station that the multi-subband related configuration is completed by using an RRC Connection ReconfigurationComplete message. 7. The method of claim 1, further comprising: When configuring the multi-subband related configuration information for the UE, the base station sets the corresponding multi-subband resource usage rights to shared resources, and the user of the fine-control service has the priority to use the shared resources. 8. The method of claim 1, further comprising: When the base station needs to modify the multi-subband related configuration for the UE, it sends the modified multi-subband related configuration information to the UE through the RRC ConnectionReconfiguration Complete message, so as to trigger the UE according to the modified multi-subband related configuration information. With the relevant configuration information, perform the corresponding multi-subband configuration operation. 9. A data transmission system, characterized in that, comprising: The user equipment UE supports the fine-control service, and is used to notify the base station that the UE supports the fine-control service when the RRC connection is established; according to the multi-subband related configuration information sent by the base station, perform related configuration operations and switch to the multi-subband working mode , data transmission in multi-subband working mode The base station is configured to configure multi-subband related configuration information for the UE according to the notification and send it to the UE. 10. The system according to claim 9, wherein the UE is used to send the service type information of the precise control service to the base station by using the RRC Connection SetupComplete message; The base station is configured to know that the UE supports the fine-control service according to the service type information. 11. system according to claim 9, is characterized in that, described UE, is used to utilize newly added in RRC Connection SetupComplete message to select public land mobile network identification selectedPLMN-Identity information element to carry and correspond to the business type of fine-control business 's network identity; The base station learns that the UE supports the fine-control service according to the network identifier and the preset correspondence between the network identifier and the service type. The system according to claim 9, wherein the base station is configured to send the multi-subband related configuration information to the UE by using an RRC ConnectionReconfiguration message. The system according to claim 9, wherein the multi-subband related configuration information comprises: multi-subband PDCCH configuration information and/or multi-subband SR index configuration; The multi-subband PDCCH configuration information is used to indicate the PDCCH channel configuration of the UE in the multi-subband working area, and the multi-subband PDCCH configuration information includes the starting subband number subbandStart of the multi-subband, the subband of the multi-subband length subbandLength, multi-subband PDCCH period factor pdcchStartF, multi-subband PDCCH repetition times pdcchNumRepetitions and multi-subband PDCCH offset pdcchOffset; Wherein, the starting subband number of the multiple subbands is used to indicate the starting position of the PDCCH of the UE in the multi-subband working mode; the subband length of the multiple subbands is used to indicate that the UE occupies the PDCCH in the multiple subband working mode. The number of subbands; the cycle factor of the multi-subband PDCCH is used to indicate the cycle factor of the PDCCH cycle of the UE in the multi-subband operation mode; the number of repetitions of the multi-subband PDCCH is used to indicate the number of times the UE repeats the radio frame in the multi-subband operation mode ; The multi-subband PDCCH offset is used to instruct the UE to calculate the offset of the beginning of the PDCCH cycle in the multi-subband working mode; the subband length of the multi-subband is less than or equal to the maximum number of downlink receiving subbands supported by the UE; The multi-subband SR index configuration is used to configure SR resources for the UE in the multi-subband working mode. 14. The system method according to claim 9, wherein the UE is further configured to confirm to the base station that the multi-subband correlation is completed by using an RRC Connection Reconfiguration Complete message after performing the correlation configuration operation. configuration. 15. The system according to claim 9, wherein the base station is further configured to set the usage authority of the corresponding multi-subband resource as a shared resource when configuring multi-subband related configuration information for the UE , and the user of the precise control service has the priority to use the shared resource. 16. The system according to claim 9, wherein the base station is further configured to, when a multi-subband related configuration needs to be modified for the UE, use an RRC Connection Reconfiguration Complete message to modify the modified multi-subband The related configuration information is sent to the UE to trigger the UE to perform a corresponding multi-subband configuration operation according to the modified multi-subband related configuration information.